29998818 has 48 divisors (see below), whose sum is σ = 68023800. Its totient is φ = 9542400.

The previous prime is 29998799. The next prime is 29998819. The reversal of 29998818 is 81889992.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27846729 + 2152089 = 5277^2 + 1467^2 .

It is not an unprimeable number, because it can be changed into a prime (29998819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52438 + ... + 53006.

Almost surely, 2^29998818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29998818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34011900).

29998818 is an abundant number, since it is smaller than the sum of its proper divisors (38024982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29998818 is a wasteful number, since it uses less digits than its factorization.

29998818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 704 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 29998818 is about 5477.1176726450. The cubic root of 29998818 is about 310.7191697098.

The spelling of 29998818 in words is "twenty-nine million, nine hundred ninety-eight thousand, eight hundred eighteen".